const defaultConfig                                     = require('@wordpress/scripts/config/webpack.config');
const WooCommerceDependencyExtractionWebpackPlugin      = require( '@woocommerce/dependency-extraction-webpack-plugin' );
const {getWebpackEntryPoints, getWordPressSrcDirectory} = require('@wordpress/scripts/utils/config');
const fs                                                = require('fs');
const CopyWebpackPlugin                                 = require('copy-webpack-plugin');

const src     = getWordPressSrcDirectory();
const plugins = `block-plugins`

function isDir(path) {
	try {
		let stat = fs.lstatSync(path);
		return stat.isDirectory();
	} catch (e) {
		// lstatSync throws an error if path doesn't exist
		return false;
	}
}

module.exports = {
	...defaultConfig,
	entry   : {
		...getWebpackEntryPoints(),
		...fs
			.readdirSync(`./${src}/${plugins}`)
			.reduce((acc, path) => {

				if (path.includes(`.php`)) {
					return acc;
				}

				acc[`${plugins}/${path}`] = `./${src}/${plugins}/${path}`;
				return acc;
			}, {}),
	},
	output  : {
		...defaultConfig.output,
		filename : (pathData) => {

			if (!pathData.chunk.name.includes(`${plugins}`)) {
				return '[name].js';
			}

			if (pathData.chunk.name.includes(`${plugins}`) && isDir(`./${src}/${pathData.chunk.name}`)) {
				return `[name]/index.js`;
			}

			return '[name]';
		},
	},
	plugins : [
		...defaultConfig.plugins.filter(( plugin ) => plugin.constructor.name !== 'DependencyExtractionWebpackPlugin'),
    new WooCommerceDependencyExtractionWebpackPlugin(),
		new CopyWebpackPlugin({
			patterns : [
				{
					from             : `${plugins}/**/{block.json,*.php,*.css}`,
					context          : src,
					noErrorOnMissing : true,
				}
			],
		}),
	],
}